UNIX for Dummies Questions & Answers

VAR="this is a variable"
echo "$VAR"

echo "This you dont see" >/dev/zero
echo "This is in a file" > a_file.txt
echo "This is the next line of a file" >> a_file.txt

while read line
do
    echo "Reading : $line"
done<a_file.txt

FILENAME="file.txt"
#while loop 
while read line; do
        echo "each line $line"
done < $FILENAME


##For Loop 
for line in (cat $FILENAME);do
        echo "each line $line"
done

for line in $(cat $FILENAME);do

for line in (cat $FILENAME);do

Is this one line or seven lines?
   

			
Were the blank lines above preserved?

IFS=$'\n'  ##blank lines preserved?
for line in $(cat $FILENAME);do
        echo "each line $line"
done

while read line
do
        echo "line was $line"
done < inputfile